Reel



W. G. ESMON D May 23, 1950 REEL 3 Sheets-Sheet 1 Filed Dec. 27, 1946 INVENTOR.

w LLIAM s. ESMOND. m %TTQRNEYS 3 Sheets-Sheet 2 May 23, 1950 w. o. ESMOND REEL Filed Dec. 27, 1946 WILLJAM G. ESMOND. BY 4y rm AT TORNEYS Patented May 23, 1950 UNITED STATES PATENT OFFICE REEL William G. Esmond, Cumberland, Md, assignor to Celanese Corporation of America, a corporation of Delaware Application December 27, 1946, Serial No. 718.821

5 Claims. (Cl. 28-71)!) a treatment with a fluid medium or mediums during the movement of the helices of yarn along the reel.

An object of this invention is the provision of an improved advancing reel characterized by its simplicity and strength of construction.

Another object of this invention is to provide an improved advancing reel embodying a plurality of bars which are angularly spaced with respect to each other, the angular spacing being fixed and equal and which bars are divided into two cages adapted for interdigitating movement.

A further object of this invention is to provide an improved advancing reel in which the movement of the cages with respect to each other may be synchronized in advance before the transfer of yarn is made, and in which the cages advance the yarn uniformly.

Other objects of the present invention, together with certain details of construction and combinations of parts, will appear from the following detailed description.

In the drawings wherein a preferred embodiment of this invention is shown,

Fig. 1 is an elevational view of the free end of the advancing reel,

Fig. 2 is a cross-sectional view taken along line 2-4 in Fig. 1 and shows one of the cages comprising the advancing reel,

Fig. 3 is a cross-sectional view taken on line 2-3 in Fig. 1, showing the other cage of the advancing reel,

Fig. 4 is a cross-sectional view of a bar taken on line 44 in Fig. 2,

Fig. 5 is another cross-sectional view of a bar taken along line 55 in Fig. 2, and

Fig. 6 is a detail view of a contour strip adapted for attachment to a surface of a slider of a bar.

Like reference characters indicate like parts throughout the several views of the drawings.

Referring now to the drawings for a detailed description of the instant invention, the reel comprises a plurality of bars which are divided into equal sets to form two cages. The bars generally indicated by reference numeral 8 form cage A (Fig. 2) and the bars generally indicated by reference numeral 9 form cage B (Fig. 3). The bars 9 and 9 are supported by means hereinafter set forth carried by a single shaft ll driven by any suitable means (not shown) and rotating said bars. The shaft ii is rotatably mounted in a bushing l2 provided with a flange I; to which are attached brackets l4 as by means of screw-bolts IS. The brackets i4 are attached to means (not shown) for supporting the reel structure firmly and rigidly. The bushing I2 is held in position on the shaft H by means of collars i6 and I1 and by thrust bearings i8 and II.

The bars 9 and 9 are substantially similar in structure and comprise a channeled slider 2| in the channel of which is mounted an inner bar 22, the slider being spaced from said inner'bar by means of roller bearings 23 carried in ballrace slots 24.

The bars 8 of cage A are wpported on shaft II for rotation therewith by means of spiders 25 and 26 fixed to said shaft II and links 21 and 28 which are pivotally attached to said spiders and to front bracket 29 and rear bracket 3| which brackets may be integral with inner bar 22. In a similar manner, the bars 9 comprising cage B are supported on shaft II and rotated thereby. Thus, spiders 32 and 33 are fixed to shaft II and links 34 and 35 are pivotally mounted on said spiders 32 and 33, and to brackets 29 and ii. This spider and link arrangement allows the bars of the cages to move in and out by means hereinafter set forth, while still remaining parallel to shaft ll.

The sliders 2i of bars 9 comprising cage A are caused to advance uniformly by the following means: Each of the sliders is provided-with an extension 36 on which is rotatably carried a cam follower 31 adapted to contact the edge 39 of cam 39 fixed to bushing l2. The edge 38 of the cam I is so cut as to give a uniform advance to the slider through from 180 to 300 of rotation of the bar about shaft ll. However, the advance of the slider is preferably arranged to advance from 225 to 275 of rotation, and the return of the slider through the other 135 to of rotation. The cam followers 31 are held against the edge 38 of the cam 39 by means of compression springs 4| carried in grooves 42 at the rear of inner bars 22. The sliders of bars 9 are caused to advance and return uniformly in a similar manner. Thus, each of the sliders of bars 9 is provided with an extension 42' on which is rotatably carried a 'cam follower 43 adapted to contact edge 44 of cam 45 fixed to bushing l2. The edge 44 of cam 45 is also so cut as to impart a uniform advance to the sliders 01' bars 9 throughout 225 to 275 of rotation of the bar about shaft II and the return of the slider through the other to 85 of rotation. The cam followers 43 are held against the edge 44 of the cam 45 by means of compression springs 4| carried in grooves 42 at the rear of inner bars 22.

In order to effect an in and out motion of bars 3. each of the inner bars 22 of said bars is provided with abracket 46 in which-is carried a stub shaft '41 having rotatably mounted thereon a cam follower 48 adapted to run on the circumferential surface 49 of came 39. The cam followers 48 are held in contact with said surface 48 by means of springs l attached to front brackets 29 on the inner bars and to a collar 52 fixed to shaft II. The in and out motion or bars 9 is effected in a similar manner. Thus, cam followers 53 which are rotatably carried by brackets 54 on inner bars 22 of bars 9 run on the circumferentialsurface 55 of cam 45. .The cam followers 53 are held in contact with said circumferential surface by means of springs 56 mounted on front brackets 29 and a collar 51 flxed to shaft ll.

The'motion of the advancing reel of this invention will now be explained with particular reference to Fig. 1. As the shaft rotates, the cam followers 48 running on the circumferential surface 49 of cam 39 cause the bars 8 of cage A to follow a perfectly circular path clockwise from point E to point F, then to move gradually and uniformly inward towards shaft H from point In Fig. 6, there is shown a contour strip 5 which may be employed to take care of linear changes in the yarn during processing. These contour strips are fastened to the surface of the sliders. The contour strips may be provided with grooves 59 which would enable the amount of advanceof the yarn to be made precise. Moreover, since the yarn is carried inthe grooves 59, the yarn may be. precisely advanced in a slack condition.

The structure of the advancing reel of the present invention presents many advantages.

" Thus, the spider and link arrangement permits therein without departing from the spirit of my invention.

Having described my invention, what I desire to secure by Letters Patent is:

1. A reel for advancing helices of yarn axially, comprising a rotatable shaft, two cages of longitudinally extending bars mounted on said shaft, the bars of one of said cages being interdigitated with the bars of the other of said cages to form move outwardly from point H to point F where point I before the bars are fully extended and r the advancing continues around until pointJ is reached. From point J to point I, the sliders return to their original positions ready for another advancing movement. This return of the sliders.is made while the bars 8 are withdrawn away from the yarn. This motion of the sliders is effected by the cam followers 31 running on the edge 38 of cam 39. The sliders of cage B begin advancing at point K before the bars 9 are fully extended and before the advance of the sliders of cage A has stopped (at point J), and the uniform advance of the sliders of cage B continues around to point L. Since the bars of cage B withdraw from point E to point L, the advance of the sliders continues until the bars have moved inwardly and away from the yarn. From point L to point K thesliders of cage B return to their original position ready a on the edge 44 of cam 45.

In the drawings, the advance of the sliders has been greatly exaggerated in the interest of clarity. Actually in practice the advance is about.

of an inch or less.

a cylinder of spaced, longitudinally extending bars for carrying the yarn along the reel, said bars comprising an inner bar and a slider carried by said inner bar for movement relative thereto, a cam follower on each of said inner bars and sliders, a cam for cooperating with the cam followers on the inner bars and sliders of one cage to reciprocate the bars of said cage radially and axially, and a second cam cooperating with the cam followers on the inner bars and sliders of the second cage to reciprocate the bars of said second cage radially and axially.

2. A reel for advancing helices of yarn axially, comprising a rotatable shaft, two cages of longitudinally extending bars mounted on said shaft, the bars of one of said cages being interdigitated with the bars of the other of said cages to form a cylinder of spaced, longitudinally extending bars for carrying the yarn along the reel, said bars comprising an inner bar and a slider carried by said inner bar for movement relative thereto, a cam follower on each of said inner bars and sliders, a cam for cooperating with the cam followers on the inner bars and liders of one cage to reciprocate the bars of said cage radially and axially, and a second cam cooperating with the cam followers on the inner bars and sliders of the second cage to reciprocate the bars of said second cage radially and axially 'in synchronization with the bars of the first-mentioned cage.

3. A reel for advancing helices of yarn axially, comprising a rotatable shaft, two cages of longitudinally extending bars mounted on said shaft, the bars of one of said cages being interdigitated with the bars of the other of said cages to form a cylinder of spaced, longitudinally extending bars for carrying the yarn along the reel, said bars comprising an inner bar and a slider carried by said inner bar for movement relative thereto, a cam follower on each of said inner bars and sliders, a cam for cooperating with the cam followers on the inner bars and sliders of one case to reciprocate the bars of said cage radially and axially, a second cam cooperating with the cam followers on the inner bars and sliders of the second cage to reciprocate the bars of said second cage radially and axially in synchronization with the bars of the first-mentioned cage, and means for maintaining said bars parallel to said shaft.

4. A reel for advancing helices of yarn axially, comprising a bushing, a rotatable shaft journaled in said bushing, two cages of longitudinally extending bars mounted on said shaft, the bars of one of said cages being interdigitated with the bars of the other of said cages to form a cylinder of spaced, longitudinally extending bars for carrying the yarn along the reel. said bars comprising an inner bar and a slider carried by said inner bar for movement relative thereto, a cam follower on each of said inner bars and sliders, a stationary cam mounted on said bushing for 00-. operating with the cam followers on the inner bars and sliders of one cage to reciprocate the bars of said cage radially and axially, and a second stationary cam mounted on said bushing cooperating with the cam followers on the inner bars and sliders of the second cage to reciprocate the bars of said second cage radially and axially in synchronization with the bars of the first-mentioned cage.

5. A reel for advancing helices of yarn axially, comprising a bushing, a rotatable shaft Journaled in said bushing, two cages of longitudinally extending bars mounted on said shaft, the bars of one of said cages being interdigitated with the bars of the other of said cages to iorm a cylinder of spaced, longitudinally extending bars for carrying the yarn along the reel, said bars comprising an inner bar and a slider carried by said inner bar for movement relative thereto, a cam follower on each of said inner bars and sliders, a stationary cam mounted on said bushing for cooperating with the cam followers on the inner bars and sliders of one cage to reciprocate the bars of said cage radially and axially, a second stationary cam mounted on said bushing co operating with the cam followers on the inner bars and sliders of the second cage to reciprocate the bars of said second cage radially and axially in synchronization with the bars of the first-mentioned cage, and means for maintaining said bars parallel to said shaft.

WILLIAM G. ESMOND.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,168,555 Battin Aug. 8, 1939 2,175,218 Samerdyke Oct. 10, 1939 2,179,523 Samerdyke Nov. 14, 1939 2,287,517 Ewing June 23, 1942 2,313,140 Furness Mar. 9, 1943 FOREIGN PATENTS Number Country Date 706,195 Germany May 20, 1941 

